M3-0.5 x 12mm DIN 7991 Hex Drive Class 10.9 Zinc Finish Alloy Steel Flat Socket Cap Screw / THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 12.0 MILLIMETERS NOMINAL FASTENER LENGTH: 12.0 MILLIMETERS NOMINAL HEAD STYLE: A39 FLAT COUNTERSUNK HEAD DIAMETER: 5.7 MILLIMETERS MINIMUM AND 6.0 MILLIMETERS MAXIMUM NOMINAL THREAD DIAMETER: 3.0 MILLIMETERS THREAD PITCH IN MILLIMETERS: 0.50 SCREW MATERIAL: STEEL SCREW SURFACE TREATMENT: ZINC THREAD SERIES DESIGNATOR: ISO M